Dual impact absorbing shoe having easily replaceable heel

ABSTRACT

A main object of the present invention is to enable anyone to replace a worn out or damaged heel simply by pulling out the heel and inserting a new heel without using a separate adhesive or work piece and a fastening element during replacement of the heel. Another object of the present invention is to securely hold a replaced heel and restrict the heel in horizontal, vertical and back-and-forth directions while in use to prevent separation and disengagement, thereby improving usability. Still another object of the present invention is to reduce shoe repair costs once a heel of the shoe is replaced and resolve any inconvenience and trouble involved in requesting repair by a shoe repair expert, thereby motivating customers to purchase shoes, as well as to increase the life of those shoes, thereby improving the economic value and be environmentally friendly. In particular, the present invention is adapted to running shoes since the heel has an airbag inserted therein and can absorb dual impact thereby enhancing the function of the shoes.

TECHNICAL FIELD

The present invention relates to a shoe having an easily replaceable heel, and in particular to a dual impact absorbing shoe having an easily replaceable heel which is characterized in that when a heel fixedly assembled to a sole of a shoe is worn out or damaged, a heel can be easily replaced without discarding all the parts of shoes, thus saving natural resources and preventing environment contamination due to the disposal of shoes, and a person can easily exchange a worn-out or damaged heel with a new one without using an adhesive, a working tool or an engaging element, thus saving a repair cost when it is needed to replace a shoe heel and improving inconveniences and uneasiness that a user is needed to request a repair to a skilled shoe repairman, whereby to ignite a customer's shoe purchase desire, and as a service life of shoes is consequently elongated, an economic profit and a better environmentally friendly outcome are expected.

The present invention is directed to a dual impact absorbing shoe having an easily replaceable heel which is well applied to all kinds of footwear such as shoes well matching with a suit, casual shoes for a leisure purpose as well as sneakers for sports purpose and sneakers with heels filled with air, etc.

The present invention is directed to a dual impact absorbing shoe having an easily replaceable heel which is well applied to a sneaker having a dual impact absorbing function by means of a heel with an airbag, thus improving the functions of sneakers.

BACKGROUND ART

A footwear generally used for a walking purpose is formed of an upper layer and a shoe sole with a heel attached to the shoe sole. When the heel wears out due to repeated use, a person's walking posture might look uneasy. In the event that a person walks for a long time wearing the shoes whose heels are severely worn out, a user body might look like a pigeon-toed walking posture or might look bad with an 0-shape formed between two legs depending on the degree that a heel inwardly or outwardly wears out. It is obvious that when heels are worn out, it is needed to replace the whole parts of shoes as soon as possible or to repair in part only the worn portions.

The preceding footwear might be classified into shoes whose heels can be replaced, namely, shoes whose soles and heels are separated and engaged with each other by means of an adhesive or a fixing nail, sneakers whose soles and heels are integral other than the above preceding shoes, and sneakers with airbag functions with air being filled in the heels. In the event of shoes, when heels wear out, the worn heels are repaired in such a way that the worn heels are exchanged at a shoe repair shop. In the event of sneakers, the soles and heels are integrated, and the heel portions of the sneakers are generally worn out faster than the shoe sole portions. In this case, it is impossible to exchange only the heels for reuse. Even though the upper sides of the sneakers are not fully damaged or worn out, it is needed to exchange the sneakers, which results in economic losses.

In the event that the heels are repaired in such a way to exchange the heels at a shoe repair shop like the preceding shoes, it is needed to search for a skilled shoe repairman which produces lots of uneasiness and inconveniences, and repair costs and time increase. The outer sides of the repaired shoes might look unclean, thus making the outer sides of the shoes look bad.

The Korean utility model application numbers 84-771 and 85-632 filed as preceding applications disclose the technologies allowing a user to easily repair shoes without asking the repair of damaged shoes to a skilled shoe repairman.

The assembly and assembly type shoe heel of preceding Korean utility model application number 84-771 is characterized in that the pluralities of securing holes and securing protrusions are formed at a rear end portion of the heel and an assistant heel of a shoe, respectively. The heels are fixed as the securing protrusions are secured to the securing holes, so the fixed force is weak, thus causing the heels to disengage which might bring in a critical problem during the use of products, whereby a product quality and a product reliability of shoes are largely damaged.

The shoe heel apparatus of another preceding application of Korean utility model application number 85-632 comprises a reinforcing plate and a plurality of securing elements such as bolts and nuts, which makes the structure complicated and the manufacture process and unit cost increase. Since a certain tool is additionally used during the exchange of heels, an easiness and convenience of exchange are bad, which drives a product purchase desire to drop. As the interconnected securing elements might be loosened during the wearing of shoes, the heels might escape owing to loosening.

DISCLOSURE OF INVENTION

Accordingly, it is an object of the present invention to provide a dual impact absorbing shoe having an easily replaceable heel which is directed to basically overcoming the problems encountered in the conventional art and is advantageously characterized in that a person can easily exchange a heel in a way to simply push and insert a new heel after a worn out or damaged shoe heel is pulled out and disengaged without using a certain adhesive or a work tool and an engaging element during the exchange of shoe heels. It is another object of the present invention to provide a dual impact absorbing shoe having an easily replaceable heel which is characterized in that a heel as exchanged is stably fixed, and since all the sides of a heel are stably supported in all the directions, an escape or separation of the heel can be substantially prevented during the wearing, thus significantly enhancing an applicability of the shoes. It is further another object of to the present invention to provide a dual impact absorbing shoe having an easily replaceable heel which makes it possible to save a shoes repair cost and promote a customer's shoes purchase desire in such a way to overcome an uneasiness or inconvenience occurring when a user is needed to ask a shoes repair to a repairman and which makes it possible to achieve an economic profit as well as an environmentally friendly outcome as a service life is elongated in terms of a shoes product.

In particular, the present invention is further directed to providing a dual impact absorbing shoe having an easily replaceable heel which can be well applied to a sneaker by providing a construction dual-absorbing an impact coming from a heel with an airbag, thus promoting the functions of sneaker.

To achieve the above objects, the present invention is basically directed to being applied to all kinds of footwear such as shoes better matching with a suit and casual shoes for a leisure purpose, shoes for a sports purpose and a sneaker with an air-filled bag at a heel. In the descriptions, all kinds of footwear is called shoes for conveniences.

In a shoe formed of a predetermined shaped shoe body for accommodating a human body's foot therein, and a heel member fixedly attached to a heel portion of an underside of the shoe body,

the heel member comprising a main frame which is fixedly attached to an underside of the shoe body and is formed of a slide groove formed along an outer circumferential surface of a rear end of the same, an engaging rim bent in a direction of the slide groove at both sides of an upper surface of the same, an accommodation part formed at its upper surface with a certain depth, and an engaging hole vertically passing through the interior of the accommodation part;

a sub-frame which is formed of a lay-down channel-shaped (⊃-shaped) insertion end portion is protruded upwardly from a surrounding area of a bottom plate having a predetermined size, an insertion groove which is formed along an inner surrounding area of the insertion grove for receiving an end portion of the underside of the main frame, and an engaging hole formed at the bottom plate and corresponding to the engaging hole of the main frame; and

a locking part which is disposed between the shoe body and the main frame and is accommodated in the accommodation part of the main frame and has an engaging protrusion formed at an underside of the locking part and respectively inserted into both the engaging hole of the main frame and the engaging hole of the sub-frame,

the sub-frame being restricted to its movement in upward and downward directions and leftward and rightward directions as the insertion end portion is inserted into the slide groove of the main frame, and then the sub-frame is inserted into an end portion of the underside of the main frame and the engaging rim, respectively, and sub-frame being restricted to its movement in forward and backward directions as it is inserted into the engaging hole of the main frame and the engaging hole of the sub-frame, respectively.

Meanwhile the heel member further includes a spring installed between an underside of the shoe body and an upper surface of the locking part, thus providing an elastic force to the locking part, so the locking part remains inserted into both the engaging hole of the main frame and the engaging hole of the sub-frame, respectively, and the main frame includes an assistant engaging rim formed at both sides of an underside and facing the engaging rim, and the sub-frame is configured in such a way that the guide groove corresponding to the assistant engaging rim communicates with the insertion groove along an inner surrounding area of the insertion end portion, so the end portion of the underside of the main frame and the assistant engaging rim are inserted into the insertion groove and the guide grove of the sub-frame, respectively, thus being engaged with the main frame and the sub-frame, respectively, and the a plurality of impact absorption pads are fixedly attached to between an underside of the main frame and an upper surface of the sub-frame and at an underside of the sub-frame, respectively, thus dually absorbing impacts, and the heel member is characterized in that the sub-frame is formed of either an air-bag type sub-frame of which the interior of an insertion end portion is filled with air wherein the air-bag type sub-frame is applied to a sneaker, or a heel type sub-frame which is applied to a shoe or a casual shoe and is made from a rubber material.

Meanwhile the heel member 3 in which the air-bag type sub-frame 20 a is used as a sub-frame 20, is formed of an upper body 10 a and a lower body 10 b formed as the main frame 10 is divided and the divided parts are connected, and the air-bag type sub-frame 20 a is inserted into between the upper body 10 a and the lower body 10 b, so the upper body 10 a, the lower body 10 b and the air-bag type sub-frame 20 a function with an air suspension function, and the upper body 10 a is attached to an underside of the shoe body 2, and a slide groove 11 is formed along an outer circumferential surrounding area of the rear end portion, and an engaging rim 12 is formed at both sides of an upper surface and is bend in the direction of the slide groove 11, and an accommodation part 14 is formed at an upper surface with a set depth, and the lower body 10 b has an insertion end portion bent corresponding to the slide groove 11 of the upper body 10 a, with the insertion end portion 16 being inserted into the slide groove 11 of the upper body 10 a, and the accommodation part 14 of the upper body 10 a and the lower body 10 b each have an engaging hole 15 formed at corresponding portions, respectively.

ADVANTAGEOUS EFFECTS

According to the present invention, when a heel assembled to a shoe sole wears out or damaged, only the heel can be exchanged without discarding all the parts of shoes, thus saving costs and obtaining economical advantages. It is hoped that the environmental contaminations can be substantially prevented by preventing the shoes generally made from a material causing environmental contaminations from being carelessly discarded, thus achieving a good environment protection effect.

In addition, the exchange of heels can be easily done by a certain person without using an adhesive or a work tool and an engaging element, so it is possible to save a shoe heel repair cost and it does not need to inconveniently ask a shoe heel repair to a skilled shoe repairman.

In the present invention, a customer's shoe purchase desire can be ignited and promoted, and a product reliability and durability can be enhanced in large.

The sneakers for sports purposes are inherently designed to equip with various shapes and functions depending on the purposes of diverse sports, and the heels can be optionally selected and engaged, which makes it possible to enhance an exercise effect while overcoming inconveniences caused as a customer needs to purchase shoes having various use purposes and functions and preventing money consumption. In particular, the present invention is directed to dually absorbing an impact with the aid of a heel with an airbag, thus significantly enhancing the inherent functions of a sneaker.

In addition, the heels with different hardness can be manufactured and exchanged, which makes the shoes made according to the present invention very functional, whereby the present invention is good for young people in growth period as well as the health of adults, thus achieving a lot of excellent effects.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention, wherein;

FIG. 1 is a perspective view illustrating a disassembled state of shoes (sneakers) according to a first embodiment of the present invention;

FIG. 2( a)(b) is a perspective views illustrating shoes (sneaker adapted with an air suspension function) according to a second embodiment of the present invention, of which (a) shows a separated state, and (b) shows an engaged state;

FIG. 3( a)(b) is a cross sectional view illustrating shoes (sneaker adapted with an air suspension function) according to a second embodiment of the present invention, of which (a) shows a separated state, and (b) shows an engaged state;

FIG. 4 is a perspective view illustrating a disassembled state of shoes (sneaker for airbag purpose) according to a third embodiment of the present invention;

FIG. 5 is a perspective view illustrating a disassembled state of shows shoes (shoes and casual shoes) according to a fourth embodiment of the present invention; and

FIG. 6 is a cross sectional views illustrating a disassembled state of a heel member of FIG. 5.

BEST MODES FOR CARRYING OUT THE INVENTION

The preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a disassembled state of shoes (sneakers) according to a first embodiment of the present invention, FIG. 2( a)(b) is a perspective view illustrating shoes (sneaker adapted with an air suspension function) according to a second embodiment of the present invention, of which (a) shows a separated state, and (b) shows an engaged state, FIG. 3( a)(b) is a cross sectional view illustrating shoes (sneaker adapted with an air suspension function) according to a second embodiment of the present invention, of which (a) shows a separated state, and (b) shows an engaged state, FIG. 4 is a perspective view illustrating a disassembled state of shoes (sneaker for airbag purpose) according to a third embodiment of the present invention, FIG. 5 is a perspective view illustrating a disassembled state of shows shoes (shoes and casual shoes) according to a fourth embodiment of the present invention, and FIG. 6 is a cross sectional views illustrating a disassembled state of a heel member of FIG. 5.

As shown in FIGS. 1 through 6, in a shoe formed of a predetermined shaped shoe body 2 for accommodating a human body's foot therein, and a heel member 3 fixedly attached to a heel portion of an underside of the shoe body,

the heel member 3 comprising a main frame 10 which is fixedly attached to an underside of the shoe body 2 and is formed of a slide groove 11 formed along an outer circumferential surface of a rear end portion of the same, an engaging rim 12 bent in a direction of the slide groove 11 at both sides of an upper surface of the same, an accommodation part 14 formed at its upper surface with a certain depth, and an engaging hole 15 vertically passing through the interior of the accommodation part 14;

a sub-frame 20 which is formed of a lay-down channel-shaped (⊃-shaped) insertion end portion 22 protruded upwardly from a surrounding area of a bottom plate 21 having a predetermined size, an insertion groove 221 which is formed along an inner surrounding area of the insertion groove 221 for receiving an end portion of the underside of the main frame 10 along an inner surrounding area of the insertion end portion 22, and an engaging hole 211 formed at the bottom plate 21 and corresponding to the engaging hole 15 of the main frame 10; and

a locking part 30 which is disposed between the shoe body 2 and the main frame 10 and is accommodated in the accommodation part 14 of the main frame 10 and has an engaging protrusion 31 formed at an underside of the locking part 30 and respectively inserted into both the engaging hole 15 of the main frame 10 and the engaging hole 211 of the sub-frame 20,

the sub-frame 20 being restricted to its movement in upward and downward directions and leftward and rightward directions as the insertion end portion 22 is inserted into the slide groove 11 of the main frame 10, and then the sub-frame 20 is inserted into an end portion of the underside of the main frame 10 and the engaging rim 12, respectively, and sub-frame 20 being restricted to its movement in forward and backward directions as the engaging protrusion 31 of the locking part 30 is inserted into the engaging hole 15 of the main frame 10 and the engaging hole 211 of the sub-frame 20, respectively.

In addition, the heel member 3 further includes a spring 40 installed between an underside of the shoe body 2 and an upper surface of the locking part 30, thus providing an elastic force to the locking part 30, so the engaging protrusion 31 of the locking part is inserted into the engaging hole 15 of the main frame 10 and the engaging hole 211 of the sub-frame 20, respectively.

In addition, the main frame 10 includes an assistant engaging rim 13 formed at both sides of an underside and facing the engaging rim 12, and the sub-frame 20 is configured in such a way that the guide groove 222 corresponding to the assistant engaging rim 13 communicates with the insertion groove 221 along an inner surrounding area of the insertion end portion 22, so the end portion of the underside of the main frame 10 and the assistant engaging rim 13 are inserted into the insertion groove 221 and the guide grove 222 of the sub-frame 20, respectively, thus being engaged with the main frame 10 and the sub-frame 20, respectively.

In addition, a plurality of impact absorption pads 50, 60 and 70 are fixedly attached to between an underside of the main frame 10 and an upper surface of the sub-frame 20 and at an underside of the sub-frame 20, respectively.

In addition, the heel member 3 is characterized in that the sub-frame 20 is formed of either an air-bag type sub-frame 20 a of which the interior of an insertion end portion 22 is filled with air wherein the air-bag type sub-frame 20 a is applied to a sneaker, or a heel type sub-frame 20 b which is applied to a shoe or a casual shoe and is made from a rubber material.

Here, the heel member 3 in which the air-bag type sub-frame 20 a is used as a sub-frame 20, is formed of an upper body 10 a and a lower body 10 b formed as the main frame 10 is divided and the divided parts are connected, and the air-bag type sub-frame 20 a is inserted into between the upper body 10 a and the lower body 10 b, so the upper body 10 a, the lower body 10 b and the air-bag type sub-frame 20 a function with an air suspension function, and the upper body 10 a is attached to an underside of the shoe body 2, and a slide groove 11 is formed along an outer circumferential surrounding area of the rear end portion, and an engaging rim 12 is formed at both sides of an upper surface and is bend in the direction of the slide groove 11, and an accommodation part 14 is formed at an upper surface with a set depth, and the lower body 10 b has an insertion end portion 16 bent corresponding to the slide groove 11 of the upper body 10 a, with the insertion end portion 16 being inserted into the slide groove 11 of the upper body 10 a, and the accommodation part 14 of the upper body 10 a and the lower body 10 b each have an engaging hole 15 formed at corresponding portions, respectively.

The operations that the heel member 3 is assembled to the shoe body 2 according to the present invention will be described hereinafter.

As shown in FIG. 1, the occasion that the shoes 1 are assumed as a sneaker will be first described. The engaging method between the shoe body 2 and the sole 4, the bottom of the shoe, is the same as a conventional typical engaging method. So, the descriptions thereon will be omitted. The technical features of the heel member 3 assembled to the underside of the heel part of the shoe body 2 will be described in details.

The heel member 3 which is a key technical feature of the present invention is assembled to an underside of the heel part of the shoe body 2, the assembly sequence of which is as follows.

A locking part 30 is installed at an underside of the cover 80, and a spring 40 elastically disposed between the cover 80 and the locking part 30 is inserted into a fixing groove 32 of an upper surface of the locking part 30, thus providing an elastic force to the locking part 30 in a downward direction, allowing the cover 80 and the locking part 30 to be sequentially accommodated into an accommodation part 14 of the main frame 10.

With them accommodated like that, an engaging protrusion 31 of an underside of the locking part 30 is engaged to the engaging hole 15 of the main frame 10, and a fixing pin 81 of the cover 80 is engaged to each pin hole 142 formed at the should portion of the accommodation part 14, thus allowing the cover 80 and the locking part 30 to be fixedly mounted in the accommodation part 14.

In the above state, as an insertion end portion 22 of an air back type sub-frame 20 a is inserted into a slide groove 11 formed at an outer circumferential surface of the main frame 10, the end portion of the underside of the main frame 10 is inserted into the insertion groove 221, and the insertion end portion 22 of the airbag type sub-frame 20 a is inserted into an inner side of an engaging rim 12, so the airbag type sub-frame 20 a engaged in such a way that the airbag type sub-frame 20 a is secured to the main frame 10 of the lower surface can be restricted to its movement in the upward and downward directions and the leftward and rightward directions. Here, the airbag type sub-frame 20 a secured as the engaging protrusion part 31 of the locking part 30 is sequentially inserted into the engaging hole 15 of the main frame 10 and the engaging hole 211 of the sub-frame 20 a is restricted to its movement in the forward and backward directions, thus substantially preventing the escape and separation of the airbag type sub-frame 20 a engaged to the main frame 10, whereby the heel member 3 can be stably, reliably assembled to the underside of the heel part of the shoe body 2.

With the heel member 3 being stably assembled to an underside of the heel part of the shoe body 2, what the heel member 3 is severely worn out means that the airbag type sub-frame 20 a is worn out or damaged. When the airbag type sub-frame 20 a is worn out or damaged, only the airbag type sub-frame 20 a is pulled out of the main frame 10 which is the heel member 3, and is exchanged with a new airbag type sub-frame 20 a, thus simply finishing the exchange.

The procedure pulling the airbag type sub-frame 20 a out of the main frame 10 will be described in more details. When the engaging protrusion 31 inserted into the engaging hole 211 formed at the underside of the airbag type sub-frame 20 a is pressed, the locking part 30 elastically supported by the spring 40 is compressed, and the locking part 30 moves upwards and comes into close contact with the underside of the cover 80. At the moment the engaging protrusion 31 is disengaged from the engaging hole 211, the airbag type sub-frame 20 a is pulled backward, thus easily pulling out of the main frame 10 of the heel member 3.

In the above pulled-out state, what the airbag type sub-frame was exchanged with a new airbag type sub-frame was already described in the above, so the detailed description thereon will be omitted.

The shoes 1 according to a first embodiment of the present invention is characterized in that impact absorbing pads 60 and 70 are attached to between the underside of the main frame 10 and the upper surface of the sub-frame 20 and at the underside of the sub-frame 20, respectively, thus dually absorbing impacts along with an airbag function.

The shoe 1 corresponding to an airbag type sneaker according to a second embodiment of the present invention as shown in FIGS. 2 and 3 is directed to having a heel member 3 in which the airbag type sub-frame 20 a is used as a sub-frame 20. The shoes 1 corresponding to an airbag type sneaker according to a second embodiment of the present invention is formed of an upper body 10 a and a lower body 10 b which are engaged as the main frame 10 is separated, with the airbag type sub-frame 20 a being inserted into between the upper body 10 a and the lower body 10 b, so the upper body 10 a, the lower body 10 b and the airbag type sub-frame 20 a function as an air suspension.

Here the upper body 10 a of the main frame 10 is attached to an underside of the shoe body 2, and a slide groove 11 is formed along an outer circumferential surrounding area of the rear end portion, with an engaging rim 12 bent toward the slide groove 11 being formed at both sides of an upper surface, with an accommodation part 14 being formed at its upper surface with a set depth. At the lower body 10 b of the main frame 10 is formed an insertion end portion 16 which is bent in match with the slide groove 11 of the upper body 10 a, which insertion end portion 16 is inserted into the side groove 11 of the upper body 10 a. The accommodation part 14 of the upper body 10 a and the lower body 10 b have engaging grooves 15 at opposite portions, thus allowing the engaging protrusion 31 of the locking part 30 to be inserted into the engaging groove 15.

The shoes 1 corresponding to an airbag type sneaker according to a second embodiment of the present invention is directed to increasing an impact absorption effect as the main frame 10 and the airbag type sub-frame 20 a function as an air suspension.

As shown in FIG. 4, the shoes 1 corresponding to an airbag type sneaker according to a third embodiment of the present invention have a different shape as compared to the shoes 1 corresponding to an airbag type sneaker 1 according to the first and second embodiments of the present invention; however the remaining constructions are all the same as in the embodiments of FIGS. 1 through 3, and their operations and effects are same as well, so the same element names and reference numerals are given in terms of the same elements, and the detailed descriptions thereon will be omitted.

The shoes and casual shoes 1 as shown in FIGS. 5 and 6 each are equipped with a heel type sub-frame 20 b as compared to the airbag type sub-frame 20 a disposed at the shoes 1 corresponding to a sneaker as shown in FIGS. 1 through 4. The shoes and the casual shoes 1 according to the fourth embodiment of the present invention are characterized in that an assistant engaging rim 13 facing the engaging rim 12 is disposed at both sides of an underside of the main frame 10, and the sub-frame 20 is configured in such a way that the guide groove 222 corresponding to the assistant engaging rim 13 is formed communicating with the insertion groove 221 along an inner circumferential surrounding area of the insertion end portion 22, so the end portion of the underside of the main frame 10 and the assistant engaging rim 13 are inserted into the insertion groove 221 and the guide grove 222 of the sub-frame 20, respectively, whereby the main frame 10 and the sub-frame 20 are interconnected with each other. As a result, the engagement of the main frame 10 and the sub-frame 20 becomes more stable.

All the technical features shown in FIGS. 1 through 4 are same, and their operations and effects are same as well, so the same element names and reference numerals are given for the same elements. The detailed descriptions thereon will be omitted.

So far, the preferred embodiments according to the present invention have been described. The scope of the rights of the present invention is not limited thereto. It is obvious that the copes of the present invention cover all the matters assumed in the equivalent scope of the embodiments of the present invention, and various modifications and changes are possible by an ordinary person skilled in the art without escaping the concepts of the present invention.

MODES FOR CARRYING OUT THE INVENTION

In a shoe formed of a predetermined shaped shoe body 2 for accommodating a human body's foot therein, and a heel member 3 fixedly attached to a heel portion of an underside of the shoe body 2,

the heel member 3 comprising a main frame 10 which is fixedly attached to an underside of the shoe body 2 and is formed of a slide groove 11 formed along an outer circumferential surface of a rear end portion of the same, an engaging rim 12 bent in a direction of the slide groove 11 at both sides of an upper surface of the same, an accommodation part 14 formed at its upper surface with a certain depth, and an engaging hole 15 vertically passing through the interior of the accommodation part 14;

a sub-frame 20 which is formed of a lay-down channel-shaped (⊃-shaped) insertion end portion 22 is protruded upwardly from a surrounding area of a bottom plate 21 having a predetermined size, an insertion groove 221 which is formed along an inner surrounding area of the insertion end portion 22 for receiving an end portion of the underside of the main frame 10, and an engaging hole 211 formed at the bottom plate 21 and corresponding to the engaging hole 15 of the main frame 10; and

a locking part 30 which is disposed between the shoe body 2 and the main frame 10 and is accommodated in the accommodation part 14 of the main frame 10 and has an engaging protrusion 31 formed at an underside of the locking part 30 and respectively inserted into both the engaging hole 15 of the main frame 10 and the engaging hole 211 of the sub-frame 20,

the sub-frame 20 being restricted to its movement in upward and downward directions and leftward and rightward directions as the insertion end portion 22 is inserted into the slide groove 11 of the main frame 10, and then the sub-frame 20 is inserted into an end portion of the underside of the main frame 10 and the engaging rim 12, respectively, and sub-frame 20 being restricted to its movement in forward and backward directions as the engaging protrusion 31 of the locking part 30 is inserted into the engaging hole 15 of the main frame 10 and the engaging hole 211 of the sub-frame 20, respectively.

INDUSTRIAL APPLICABILITY

In the present invention, when a heel assembled to a shoe sole wears out or damaged, only the heel can be exchanged without discarding all the parts of shoes, thus saving costs and obtaining economical advantages. It is hoped that the environmental contaminations can be substantially prevented by preventing the shoes generally made from a material causing environmental contaminations from being carelessly discarded, thus achieving a good environment protection effect, and in particular the exchange of heels can be easily done by a certain person without using an adhesive or a work tool and an engaging element, so it is possible to save a shoe heel repair cost and it does not need to inconveniently ask a shoe heel repair to a skilled shoe repairman. In addition, since heels with various ranges of hardness can be manufactured, functional shoes can be provided, which are good for young people in growth period as well as adults, thus being widely applied to the industry. 

1. A dual impact absorbing shoe having an easily replaceable heel of which a shoe is formed of a predetermined shaped shoe body for accommodating a human body's foot therein, and a heel member fixedly attached to a heel portion of an underside of the shoe body, comprising: an improved heel member including: a main frame which is fixedly attached to an underside of the shoe body and is formed of a slide groove formed along an outer circumferential surface of a rear end portion of the same, an engaging rim bent in a direction of the slide groove at both sides of an upper surface of the same, an accommodation part formed at its upper surface with a certain depth, and an engaging hole vertically passing through the interior of the accommodation part; a sub-frame which is formed of a lay-down channel-shaped (⊃-shaped) insertion end portion protruded upwardly from a surrounding area of a bottom plate having a predetermined size, an insertion groove which is formed along an inner surrounding area of the insertion grove for receiving an end portion of the underside of the main frame along an inner surrounding area of the insertion end portion and an engaging hole formed at the bottom plate and corresponding to the engaging hole of the main frame; and a locking part which is disposed between the shoe body and the main frame and is accommodated in the accommodation part of the main frame and has an engaging protrusion formed at an underside of the locking part and respectively inserted into both the engaging hole of the main framed and the engaging hole of the sub-frame, said sub-frame being restricted to its movement in upward and downward directions and leftward and rightward directions as the insertion end portion is inserted into the slide groove of the main frame, and then the sub-frame is inserted into an end portion of the underside of the main frame and the engaging rim, respectively, and sub-frame being restricted to its movement in forward and backward directions as the engaging protrusion of the locking part is inserted into the engaging hole of the main frame and the engaging hole of the sub-frame, respectively.
 2. A dual impact absorbing shoe having an easily replaceable heel according to claim 1, wherein said heel member further includes: a spring installed between an underside of the shoe body and an upper surface of the locking part, thus providing an elastic force to the locking part, so the locking part remains inserted into both the engaging hole of the main frame and the engaging hole of the sub-frame, respectively.
 3. A dual impact absorbing shoe having an easily replaceable heel according to claim 1, wherein said main frame includes an assistant engaging rim formed at both sides of an underside and facing the engaging rim, and said sub-frame is configured in such a way that the guide groove corresponding to the assistant engaging rim communicates with the insertion groove along an inner surrounding area of the insertion end portion, so the end portion of the underside of the main frame and the assistant engaging rim are inserted into the insertion groove and the guide grove of the sub-frame, respectively, thus being engaged with the main frame and the sub-frame, respectively.
 4. A dual impact absorbing shoe having an easily replaceable heel according to claim 1, wherein said a plurality of impact absorption pads are fixedly attached to between an underside of the main frame and an upper surface of the sub-frame and at an underside of the sub-frame, respectively.
 5. A dual impact absorbing shoe having an easily replaceable heel according to claim 1, wherein said heel member is characterized in that the sub-frame is formed of either an air-bag type sub-frame of which the interior of an insertion end portion is filled with air wherein the air-bag type sub-frame is applied to a sneaker, or a heel type sub-frame which is applied to a shoe or a casual shoe and is made from a rubber material.
 6. A dual impact absorbing shoe having an easily replaceable heel according to claim 5, wherein said heel member in which the air-bag type sub-frame is used as a sub-frame, is formed of an upper body and a lower body formed as the main frame is divided and the divided parts are connected, and the air-bag type sub-frame is inserted into between the upper body and the lower body, so the upper body, the lower body and the air-bag type sub-frame function with an air suspension function, and said upper body is attached to an underside of the shoe body, and a slide groove is formed along an outer circumferential surrounding area of the rear end portion, and an engaging rim is formed at both sides of an upper surface and is bend in the direction of the slide groove, and an accommodation part is formed at an upper surface with a set depth, and said lower body has an insertion end portion bent corresponding to the slide groove of the upper body, with the insertion end portion being inserted into the slide groove of the upper body, and the accommodation part of the upper body and the lower body each have an engaging hole formed at corresponding portions, respectively.
 7. A dual impact absorbing shoe having an easily replaceable heel according to claim 2, wherein said main frame includes an assistant engaging rim formed at both sides of an underside and facing the engaging rim, and said sub-frame is configured in such a way that the guide groove corresponding to the assistant engaging rim communicates with the insertion groove along an inner surrounding area of the insertion end portion, so the end portion of the underside of the main frame and the assistant engaging rim are inserted into the insertion groove and the guide grove of the sub-frame, respectively, thus being engaged with the main frame and the sub-frame, respectively.
 8. A dual impact absorbing shoe having an easily replaceable heel according to claim 2, wherein said a plurality of impact absorption pads are fixedly attached to between an underside of the main frame and an upper surface of the sub-frame and at an underside of the sub-frame, respectively. 